Re: CC Mode multi-line strings [Was: Adding Vala support]

Hi Alan!

>> Thanks again for working on this!  There is already one user reporting
>> that huge slowdowns aren't occurring anymore given that pr.  There are
>> probably still stuff to iron out, ....
>
> I think that's highly likely.  That's why I've left it a little while
> before merging it into Emacs itself.
>

Ok, so now I have my first bug report with the new implementation on my
hands [1]. I must say I don't fully understand what is going on here.
To me it seems like CC mode is now treating _all_ strings as multiline
strings, even the ones not using the `@` prefix. Is that supposed to be
expressed somehow?  I think what the problem boils down to is this:

```
string s1 = "He said, \"This is the last \u0063hance\x0021\"";
string s2 = @"He said, ""This is the last \u0063hance\x0021""";

Console.WriteLine(s1);
Console.WriteLine(s2);
// The example displays the following output:
//     He said, "This is the last chance!"
//     He said, "This is the last \u0063hance\x0021"
```

I am not sure if this is because of the regexes or the general
implementation, so maybe you can point me in the correct direction? A
good screenshot is provided in the link below.  I don't know if you use
GitHub, so I'll attach that aswell.  Sorry to bother you with this!

> Well, congratulations!  I can understand the bit about it "taking some
> time".  ;-)


Thanks :)


> Thanks, more or less yes.  I hope everything's OK at your end, too.


Apart from my kids having their 45th or so cold this fall, then yes :)

Theo

[1]: https://github.com/emacs-csharp/csharp-mode/issues/252